diff --git a/src/app/agents/[agent]/page.test.tsx b/src/app/agents/[agent]/page.test.tsx
index 538acfb..0077fcf 100644
--- a/src/app/agents/[agent]/page.test.tsx
+++ b/src/app/agents/[agent]/page.test.tsx
@@ -77,4 +77,70 @@ describe("AgentDetailPage", () => {
     const currentItem = screen.getByText(specialId, { selector: '[aria-current="page"]' });
     expect(currentItem).toBeInTheDocument();
   });
+
+  it("formats a large lifetime total with thousands separators", async () => {
+    mockApiGet.mockReset();
+    mockApiGet.mockImplementation((url: string) => {
+      if (url.endsWith("/total")) return Promise.resolve({ total: 1234567 }) as never;
+      if (url.endsWith("/usage")) return Promise.resolve({ items: [] }) as never;
+      return Promise.reject(new Error("Not found")) as never;
+    });
+
+    renderPage("agent-big");
+
+    const strong = await screen.findByText("1,234,567");
+    expect(strong.tagName).toBe("STRONG");
+    expect(strong.parentElement).toHaveTextContent("1,234,567 requests");
+  });
+
+  it("formats per-service totals with thousands separators", async () => {
+    mockApiGet.mockReset();
+    mockApiGet.mockImplementation((url: string) => {
+      if (url.endsWith("/total")) return Promise.resolve({ total: 0 }) as never;
+      if (url.endsWith("/usage"))
+        return Promise.resolve({
+          items: [
+            { serviceId: "svc-a", total: 999 },
+            { serviceId: "svc-b", total: 1500000 },
+          ],
+        }) as never;
+      return Promise.reject(new Error("Not found")) as never;
+    });
+
+    renderPage("agent-svc");
+
+    await screen.findByText(/Lifetime total/i);
+
+    expect(screen.getByText("999 requests")).toBeInTheDocument();
+    expect(screen.getByText("1,500,000 requests")).toBeInTheDocument();
+  });
+
+  it("renders zero total without grouping", async () => {
+    mockApiGet.mockReset();
+    mockApiGet.mockImplementation((url: string) => {
+      if (url.endsWith("/total")) return Promise.resolve({ total: 0 }) as never;
+      if (url.endsWith("/usage")) return Promise.resolve({ items: [] }) as never;
+      return Promise.reject(new Error("Not found")) as never;
+    });
+
+    renderPage("agent-zero");
+
+    const strong = await screen.findByText("0");
+    expect(strong.tagName).toBe("STRONG");
+  });
+
+  it("does not render lifetime total when the optional total fetch fails", async () => {
+    mockApiGet.mockReset();
+    mockApiGet.mockImplementation((url: string) => {
+      if (url.endsWith("/total")) return Promise.reject(new Error("boom")) as never;
+      if (url.endsWith("/usage")) return Promise.resolve({ items: [] }) as never;
+      return Promise.reject(new Error("Not found")) as never;
+    });
+
+    renderPage("agent-no-total");
+
+    await screen.findByText(/No services consumed yet/i);
+
+    expect(screen.queryByText(/Lifetime total/i)).not.toBeInTheDocument();
+  });
 });
diff --git a/src/app/agents/[agent]/page.tsx b/src/app/agents/[agent]/page.tsx
index 8489b19..a53b67e 100644
--- a/src/app/agents/[agent]/page.tsx
+++ b/src/app/agents/[agent]/page.tsx
@@ -3,6 +3,7 @@
 import { useEffect, useState, use } from "react";
 import { Breadcrumb } from "@/components/Breadcrumb";
 import { apiGet } from "@/lib/apiClient";
+import { formatRequests } from "@/lib/format";
 
 type Usage = { agent: string; items: { serviceId: string; total: number }[] };
 
@@ -44,7 +45,7 @@ export default function AgentDetailPage({
       )}
       {total !== null && (
         <p className="text-sm">
-          Lifetime total: <strong>{total}</strong> requests
+          Lifetime total: <strong>{formatRequests(total)}</strong> requests
         </p>
       )}
       {items && items.length === 0 && (
@@ -55,7 +56,7 @@ export default function AgentDetailPage({
           {items.map((s) => (
             <li key={s.serviceId} className="flex items-center justify-between py-3 text-sm">
               <span className="font-mono">{s.serviceId}</span>
-              <span>{s.total} requests</span>
+              <span>{formatRequests(s.total)} requests</span>
             </li>
           ))}
         </ul>
diff --git a/src/app/services/new/page.test.tsx b/src/app/services/new/page.test.tsx
index c7b8729..51962a7 100644
--- a/src/app/services/new/page.test.tsx
+++ b/src/app/services/new/page.test.tsx
@@ -197,11 +197,19 @@ describe("NewServicePage", () => {
     expect(submitButton).toBeDisabled();
     expect(submitButton).toHaveTextContent("Saving…");
 
+    // Button should have aria-busy while loading
+    expect(submitButton).toHaveAttribute("aria-busy", "true");
+
     // Resolve post request
     resolvePost({});
 
     await waitFor(() => {
       expect(mockPush).toHaveBeenCalledWith("/services");
     });
+
+    // aria-busy should be removed after submission
+    await waitFor(() => {
+      expect(submitButton).not.toHaveAttribute("aria-busy");
+    });
   });
 });
diff --git a/src/app/services/new/page.tsx b/src/app/services/new/page.tsx
index b9ea5e8..af7fafd 100644
--- a/src/app/services/new/page.tsx
+++ b/src/app/services/new/page.tsx
@@ -64,6 +64,7 @@ export default function NewServicePage() {
 
         <Button
           type="submit"
+          loading={loading}
           disabled={loading}
           className="self-start"
         >
diff --git a/src/components/Button.tsx b/src/components/Button.tsx
index 8cdcc8a..ebb85c4 100644
--- a/src/components/Button.tsx
+++ b/src/components/Button.tsx
@@ -16,16 +16,19 @@ const ring =
 
 type ButtonProps = ButtonHTMLAttributes<HTMLButtonElement> & {
   variant?: Variant;
+  loading?: boolean;
 };
 
 export function Button({
   variant = "primary",
+  loading = false,
   className = "",
   ...rest
 }: ButtonProps) {
   return (
     <button
       {...rest}
+      aria-busy={loading || undefined}
       className={`rounded-full px-5 py-2 text-sm font-medium disabled:opacity-50 disabled:cursor-not-allowed ${variants[variant]} ${ring} ${className}`}
     />
   );